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[libvirt] checking smtp server issue
by Jim Fehlig 17 Jun '14

17 Jun '14

I've been having problems lately with an internal MTA connecting to an external one that apparently serves the libvirt list. E.g. I recently responded to "[PATCH v2 4/4] libxl: Add a test suite for libxl option generator", which includes the xen-devel list. The response made it to xen-devel, but I received the following wrt the libvirt list The attached file had the following undeliverable recipient(s): Information about your message: Message log tag: 661753 Number of send attempts: 1 Time of initial send attempt: 06-16-14 17:11:53 Transcript of session follows: Command: EHLO victor.provo.novell.com Response: 550 TLS negotiation failure Seems like a certificate problem on the victor host. I'm trying a different smtp server for another data point in my report to internal IS&T folks. Thanks for your patience. Regards, Jim

1 0

[libvirt] [PATCH v2] Added example script on how to convert LXC container config
by Cédric Bosdonnat 17 Jun '14

17 Jun '14

--- Makefile.am | 2 +- configure.ac | 1 + examples/lxcconvert/Makefile.am | 18 ++++++ examples/lxcconvert/virt-lxc-convert | 108 +++++++++++++++++++++++++++++++++++ 4 files changed, 128 insertions(+), 1 deletion(-) create mode 100644 examples/lxcconvert/Makefile.am create mode 100644 examples/lxcconvert/virt-lxc-convert diff --git a/Makefile.am b/Makefile.am index 9847ff0..0ef983f 100644 --- a/Makefile.am +++ b/Makefile.am @@ -23,7 +23,7 @@ SUBDIRS = . gnulib/lib include src daemon tools docs gnulib/tests \ tests po examples/object-events examples/hellolibvirt \ examples/dominfo examples/domsuspend examples/apparmor \ examples/xml/nwfilter examples/openauth examples/systemtap \ - tools/wireshark + examples/lxcconvert tools/wireshark ACLOCAL_AMFLAGS = -I m4 diff --git a/configure.ac b/configure.ac index 73efffa..f84d4bb 100644 --- a/configure.ac +++ b/configure.ac @@ -2699,6 +2699,7 @@ AC_CONFIG_FILES([\ examples/hellolibvirt/Makefile \ examples/systemtap/Makefile \ examples/xml/nwfilter/Makefile \ + examples/lxcconvert/Makefile \ tools/wireshark/Makefile \ tools/wireshark/src/Makefile]) AC_OUTPUT diff --git a/examples/lxcconvert/Makefile.am b/examples/lxcconvert/Makefile.am new file mode 100644 index 0000000..09cf5d9 --- /dev/null +++ b/examples/lxcconvert/Makefile.am @@ -0,0 +1,18 @@ +## Copyright (C) 2014 SUSE LINUX Products GmbH, Nuernberg, Germany. +## +## This library is free software; you can redistribute it and/or +## modify it under the terms of the GNU Lesser General Public +## License as published by the Free Software Foundation; either +## version 2.1 of the License, or (at your option) any later version. +## +## This library is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +## Lesser General Public License for more details. +## +## You should have received a copy of the GNU Lesser General Public +## License along with this library. If not, see +## <http://www.gnu.org/licenses/>. + +EXTRA_DIST= \ + virt-lxc-convert diff --git a/examples/lxcconvert/virt-lxc-convert b/examples/lxcconvert/virt-lxc-convert new file mode 100644 index 0000000..a6c5721 --- /dev/null +++ b/examples/lxcconvert/virt-lxc-convert @@ -0,0 +1,108 @@ +#!/bin/sh + +handler_cleanup() +{ + if ! test -z "$conf_dir"; then + # Remove the temporary config + rm -r "$conf_dir" + fi +} +trap handler_cleanup INT EXIT + +show_help() +{ + cat << EOF +$0 /path/to/lxc/config/file + +Wrapper around virsh domxml-from-native to ease conversion of LXC +containers configuration to libvirt domain XML. +EOF +} + +if test $# != 1; then + show_help + exit 1 +fi + +if test "$1" = "--help" || test "$1" = "-h"; then + show_help + exit $? +fi + +conf=$1 + +conf_dir=$(mktemp --tmpdir -d virt-lxc-convert-XXX) +conf_new=$conf_dir/config + +cp "$conf" "$conf_new" + +# Do we have lxc.mount, and is it pointing to a readable file? +fstab=$(sed -n '/lxc.mount[[:space:]]*=/ s/[[:space:]]*=[[:space:]]*/=/p' \ + "$conf_new" | cut -f 2 -d '=') +if test -n "$fstab" && test -r "$fstab"; then + sed 's/^lxc.mount[[:space:]]*=.*$//' "$conf_new" >"${conf_new}.tmp" + mv "${conf_new}.tmp" "${conf_new}" + sed 's/^$[^#]$/lxc.mount.entry = \1/' "$fstab" >>"${conf_new}" +fi + +memory=$(free | sed -n '/Mem:/s/ \+/ /gp' | cut -f 2 -d ' ') +default_tmpfs="size=$((memory/2))" + +# Do we have tmpfs without size param? +lineno=0 +while read line; do + lineno=$(expr $lineno + 1) + has_rel_size=false + case $line in + lxc.mount.entry[[:space:]]*=[[:space:]]*tmpfs[[:space:]]*) + is_tmpfs=true + ;; + *) + is_tmpfs=false + ;; + esac + + # We only care about tmpfs mount entries here + if ! $is_tmpfs; then + continue + fi + + case $line in + *size=[0-9][0-9]*%*) + has_rel_size=true + has_size=true + ;; + *size=*) + has_size=true + ;; + *) + has_size=false + ;; + esac + + # Add the default size here (50%) if no size is given + if ! $has_size; then + last_option_match="$[[:space:]]*[0-9][[:space:]]*[0-9][::space::]*$$" + sed "${lineno}s/$last_option_match/,$default_tmpfs\1/" \ + "$conf_new" >"${conf_new}.tmp" + mv "${conf_new}.tmp" "${conf_new}" + fi + + # Convert relative sizes + if $has_rel_size; then + percent=$(echo "$line" | sed 's/.*size=$[0-9][0-9]*$%.*/\1/') + size="$((memory*percent/100))" + sed "${lineno}s/size=[0-9]*%/size=${size}/" \ + "$conf_new" >"${conf_new}.tmp" + mv "${conf_new}.tmp" "${conf_new}" + fi +done < "$conf_new" + +# Do we have any memory limit set? +mem_limit=$(grep 'lxc.cgroup.memory.limit_in_bytes[[:space:]]*=' $conf_new) +if test -z "$mem_limit"; then + echo "lxc.cgroup.memory.limit_in_bytes = $memory" >> "$conf_new" +fi + +virsh -c lxc:/// domxml-from-native lxc-tools $conf_new +exit $? -- 1.8.4.5

3 2

[libvirt] [PATCH] blockjob: don't remove older-style mirror XML
by Eric Blake 17 Jun '14

17 Jun '14

Commit 7c6fc39 introduced a regression in the XML produced for older clients. The argument at the time was that clients shouldn't be depending on output-only data for something that is only going to be triggered for a transient guest; but John Ferlan reported that the automated testsuite was such a client. It's better to be safe than sorry by guaranteeing back-compat cruft. Note that later patches will be using <mirror> for active block commit, but there we don't have to worry about back-compat. * src/conf/domain_conf.c (virDomainDiskDefFormat): Restore old style output when necessary. * docs/schemas/domaincommon.rng: Validate back-compat style. * docs/formatdomain.html.in: Update the documentation. * tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-mirror-old.xml: Update tests. * tests/qemuxml2argvdata/qemuxml2argv-disk-mirror.xml: Likewise. Signed-off-by: Eric Blake <eblake(a)redhat.com> --- I have to rebase my remaining active commit series on top of this, but wanted to get this out now so that John can test if this is sufficient to resolve the test failure without having to modify things in the automated tester. docs/formatdomain.html.in | 12 +++++++----- docs/schemas/domaincommon.rng | 12 ++++++++++-- src/conf/domain_conf.c | 19 +++++++++++++------ tests/qemuxml2argvdata/qemuxml2argv-disk-mirror.xml | 4 ++-- .../qemuxml2xmlout-disk-mirror-old.xml | 4 ++-- 5 files changed, 34 insertions(+), 17 deletions(-) diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index 1b6ced8..13ba541 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -1891,11 +1891,13 @@ attribute <code>ready</code> is present, then it is known the disk is ready to pivot; otherwise, the disk is probably still copying. For now, this element only valid in output; it is - ignored on input. Since 1.2.6 - (Older libvirt since 0.9.12 allowed - only mirroring to a file, with the information reported - in <code>file</code> and <code>format</code> attributes - of <code>mirror</code> rather than subelements.) + ignored on input. The <code>source</code> sub-element exists + for all two-phase jobs since 1.2.6. + Older libvirt supported only block copy to a + file, since 0.9.12; for + compatibility with older clients, such jobs include redundant + information in the attributes <code>file</code> + and <code>format</code> in the <code>mirror</code> element. </dd> <dt><code>target</code></dt> <dd>The <code>target</code> element controls the bus / device diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng index 6cc922c..33d0308 100644 --- a/docs/schemas/domaincommon.rng +++ b/docs/schemas/domaincommon.rng @@ -4176,7 +4176,7 @@ <define name='diskMirror'> <element name='mirror'> <choice> - <group> + <group>  <attribute name='file'> <ref name='absFilePath'/> </attribute> @@ -4185,8 +4185,16 @@ <ref name='storageFormat'/> </attribute> </optional> + <optional> + <interleave> + <ref name='diskSourceFile'/> + <optional> + <ref name="diskFormat"/> + </optional> + </interleave> + </optional> </group> - <group> + <group>  <interleave> <ref name="diskSource"/> <optional> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index be81dbe..4114289 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -15187,19 +15187,26 @@ virDomainDiskDefFormat(virBufferPtr buf, /* For now, mirroring is currently output-only: we only output it * for live domains, therefore we ignore it on input except for - * the internal parse on libvirtd restart. We only output the - * new style similar to backingStore, even though the parser - * code still accepts old style across libvirtd upgrades. */ + * the internal parse on libvirtd restart. We prefer to output + * the new style similar to backingStore, but for back-compat on + * blockcopy files we also have to output old style attributes. + * The parser accepts either style across libvirtd upgrades. */ if (def->mirror && !(flags & VIR_DOMAIN_XML_INACTIVE)) { + const char *formatStr = NULL; + + if (def->mirror->format) + formatStr = virStorageFileFormatTypeToString(def->mirror->format); virBufferAsprintf(buf, "<mirror type='%s'", virStorageTypeToString(def->mirror->type)); + if (def->mirror->type == VIR_STORAGE_TYPE_FILE) { + virBufferEscapeString(buf, " file='%s'", def->mirror->path); + virBufferEscapeString(buf, " format='%s'", formatStr); + } if (def->mirroring) virBufferAddLit(buf, " ready='yes'"); virBufferAddLit(buf, ">\n"); virBufferAdjustIndent(buf, 2); - if (def->mirror->format) - virBufferEscapeString(buf, "<format type='%s'/>\n", - virStorageFileFormatTypeToString(def->mirror->format)); + virBufferEscapeString(buf, "<format type='%s'/>\n", formatStr); if (virDomainDiskSourceFormat(buf, def->mirror, 0, 0) < 0) return -1; virBufferAdjustIndent(buf, -2); diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-mirror.xml b/tests/qemuxml2argvdata/qemuxml2argv-disk-mirror.xml index a937d0a..72b03c9 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-disk-mirror.xml +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-mirror.xml @@ -17,7 +17,7 @@ <disk type='block' device='disk'> <source dev='/dev/HostVG/QEMUGuest1'/> <backingStore/> - <mirror type='file' ready='yes'> + <mirror type='file' file='/dev/HostVG/QEMUGuest1Copy' ready='yes'> <source file='/dev/HostVG/QEMUGuest1Copy'/> </mirror> <target dev='hda' bus='ide'/> @@ -33,7 +33,7 @@ <disk type='file' device='disk'> <source file='/tmp/data.img'/> <backingStore/> - <mirror type='file'> + <mirror type='file' file='/tmp/copy.img' format='qcow2'> <format type='qcow2'/> <source file='/tmp/copy.img'/> </mirror> diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-mirror-old.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-mirror-old.xml index a937d0a..72b03c9 100644 --- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-mirror-old.xml +++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-mirror-old.xml @@ -17,7 +17,7 @@ <disk type='block' device='disk'> <source dev='/dev/HostVG/QEMUGuest1'/> <backingStore/> - <mirror type='file' ready='yes'> + <mirror type='file' file='/dev/HostVG/QEMUGuest1Copy' ready='yes'> <source file='/dev/HostVG/QEMUGuest1Copy'/> </mirror> <target dev='hda' bus='ide'/> @@ -33,7 +33,7 @@ <disk type='file' device='disk'> <source file='/tmp/data.img'/> <backingStore/> - <mirror type='file'> + <mirror type='file' file='/tmp/copy.img' format='qcow2'> <format type='qcow2'/> <source file='/tmp/copy.img'/> </mirror> -- 1.9.3

2 2

[libvirt] [PATCH] blockjob: use stable disk string in job event
by Eric Blake 17 Jun '14

17 Jun '14

When the block job event was first added, it was for block pull, where the active layer of the disk remains the same name. It was also in a day where we only cared about local files, and so we always had a canonical absolute file name. But two things have changed since then: we now have network disks, where determining a single absolute string does not really make sense; and we have two-phase jobs (copy and active commit) where the name of the active layer changes between the first event (ready, on the old name) and second (complete, on the pivoted name). Adam Litke reported that having an unstable string between events makes life harder for clients. Furthermore, all of our API that operate on a particular disk of a domain accept multiple strings: not only the absolute name of the active layer, but also the destination device name (such as 'vda'). As this latter name is stable, even for network sources, it serves as a better string to supply in block job events. * include/libvirt/libvirt.h.in (virConnectDomainEventBlockJobCallback): Document altered semantics. * src/conf/domain_event.c (_virDomainEventBlockJob): Rename field, to ensure we catch all clients. (virDomainEventBlockJobDispose, virDomainEventBlockJobNew) (virDomainEventBlockJobNewFromObj) (virDomainEventBlockJobNewFromDom) (virDomainEventDispatchDefaultFunc): Adjust clients. * src/conf/domain_event.h: Likewise. * src/qemu/qemu_driver.c (qemuDomainBlockJobImpl): Likewise. * src/qemu/qemu_process.c (qemuProcessHandleBlockJob): Likewise. * src/remote/remote_protocol.x (remote_domain_event_block_job_msg): Likewise. * src/remote/remote_driver.c (remoteDomainBuildEventBlockJobHelper): Likewise. * daemon/remote.c (remoteRelayDomainEventBlockJob): Likewise. * src/remote_protocol-structs: Regenerate. Signed-off-by: Eric Blake <eblake(a)redhat.com> --- If you think backward compatibility of old clients that expected and operated on an absolute name is too important to break, I'm open to suggestions on alternatives how to preserve that. We don't have a flag argument during event registration, or I would have used it. Otherwise, I hope this change is okay as-is. daemon/remote.c | 8 ++++---- include/libvirt/libvirt.h.in | 11 ++++++++++- src/conf/domain_event.c | 18 +++++++++--------- src/conf/domain_event.h | 4 ++-- src/qemu/qemu_driver.c | 2 +- src/qemu/qemu_process.c | 4 +--- src/remote/remote_driver.c | 2 +- src/remote/remote_protocol.x | 2 +- src/remote_protocol-structs | 2 +- 9 files changed, 30 insertions(+), 23 deletions(-) diff --git a/daemon/remote.c b/daemon/remote.c index 34c96c9..ee1bbbc 100644 --- a/daemon/remote.c +++ b/daemon/remote.c @@ -558,7 +558,7 @@ remoteRelayDomainEventGraphics(virConnectPtr conn, static int remoteRelayDomainEventBlockJob(virConnectPtr conn, virDomainPtr dom, - const char *path, + const char *disk, int type, int status, void *opaque) @@ -571,11 +571,11 @@ remoteRelayDomainEventBlockJob(virConnectPtr conn, return -1; VIR_DEBUG("Relaying domain block job event %s %d %s %i, %i, callback %d", - dom->name, dom->id, path, type, status, callback->callbackID); + dom->name, dom->id, disk, type, status, callback->callbackID); /* build return data */ memset(&data, 0, sizeof(data)); - if (VIR_STRDUP(data.path, path) < 0) + if (VIR_STRDUP(data.disk, disk) < 0) goto error; data.type = type; data.status = status; @@ -596,7 +596,7 @@ remoteRelayDomainEventBlockJob(virConnectPtr conn, return 0; error: - VIR_FREE(data.path); + VIR_FREE(data.disk); return -1; } diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in index dc88c40..a983046 100644 --- a/include/libvirt/libvirt.h.in +++ b/include/libvirt/libvirt.h.in @@ -4852,11 +4852,20 @@ typedef enum { * virConnectDomainEventBlockJobCallback: * @conn: connection object * @dom: domain on which the event occurred - * @disk: fully-qualified filename of the affected disk + * @disk: name associated with the affected disk * @type: type of block job (virDomainBlockJobType) * @status: status of the operation (virConnectDomainEventBlockJobStatus) * @opaque: application specified data * + * The string returned for @disk can be used in any of the libvirt API + * that operate on a particular disk of the domain. In older versions + * of libvirt, this string was the fully-qualified filename of the + * active layer of the disk; but as some events can change which file + * is the active layer, and because network protocols do not + * necessarily have a canonical filename, libvirt 1.2.6 and newer + * instead use the device target shorthand (the <target dev='...'/> + * sub-element, such as "vda"). + * * The callback signature to use when registering for an event of type * VIR_DOMAIN_EVENT_ID_BLOCK_JOB with virConnectDomainEventRegisterAny() */ diff --git a/src/conf/domain_event.c b/src/conf/domain_event.c index b565732..a2d59fd 100644 --- a/src/conf/domain_event.c +++ b/src/conf/domain_event.c @@ -128,7 +128,7 @@ typedef virDomainEventIOError *virDomainEventIOErrorPtr; struct _virDomainEventBlockJob { virDomainEvent parent; - char *path; + char *disk; int type; int status; }; @@ -364,7 +364,7 @@ virDomainEventBlockJobDispose(void *obj) virDomainEventBlockJobPtr event = obj; VIR_DEBUG("obj=%p", event); - VIR_FREE(event->path); + VIR_FREE(event->disk); } static void @@ -778,7 +778,7 @@ static virObjectEventPtr virDomainEventBlockJobNew(int id, const char *name, unsigned char *uuid, - const char *path, + const char *disk, int type, int status) { @@ -792,7 +792,7 @@ virDomainEventBlockJobNew(int id, id, name, uuid))) return NULL; - if (VIR_STRDUP(ev->path, path) < 0) { + if (VIR_STRDUP(ev->disk, disk) < 0) { virObjectUnref(ev); return NULL; } @@ -804,22 +804,22 @@ virDomainEventBlockJobNew(int id, virObjectEventPtr virDomainEventBlockJobNewFromObj(virDomainObjPtr obj, - const char *path, + const char *disk, int type, int status) { return virDomainEventBlockJobNew(obj->def->id, obj->def->name, - obj->def->uuid, path, type, status); + obj->def->uuid, disk, type, status); } virObjectEventPtr virDomainEventBlockJobNewFromDom(virDomainPtr dom, - const char *path, + const char *disk, int type, int status) { return virDomainEventBlockJobNew(dom->id, dom->name, dom->uuid, - path, type, status); + disk, type, status); } virObjectEventPtr @@ -1255,7 +1255,7 @@ virDomainEventDispatchDefaultFunc(virConnectPtr conn, blockJobEvent = (virDomainEventBlockJobPtr)event; ((virConnectDomainEventBlockJobCallback)cb)(conn, dom, - blockJobEvent->path, + blockJobEvent->disk, blockJobEvent->type, blockJobEvent->status, cbopaque); diff --git a/src/conf/domain_event.h b/src/conf/domain_event.h index 9c41090..e107cc4 100644 --- a/src/conf/domain_event.h +++ b/src/conf/domain_event.h @@ -117,12 +117,12 @@ virDomainEventControlErrorNewFromObj(virDomainObjPtr obj); virObjectEventPtr virDomainEventBlockJobNewFromObj(virDomainObjPtr obj, - const char *path, + const char *disk, int type, int status); virObjectEventPtr virDomainEventBlockJobNewFromDom(virDomainPtr dom, - const char *path, + const char *disk, int type, int status); diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index b4bf561..c866557 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -15135,7 +15135,7 @@ qemuDomainBlockJobImpl(virDomainObjPtr vm, * active commit, so we can hardcode the event to pull */ int type = VIR_DOMAIN_BLOCK_JOB_TYPE_PULL; int status = VIR_DOMAIN_BLOCK_JOB_CANCELED; - event = virDomainEventBlockJobNewFromObj(vm, disk->src->path, type, + event = virDomainEventBlockJobNewFromObj(vm, disk->dst, type, status); } else if (!(flags & VIR_DOMAIN_BLOCK_JOB_ABORT_ASYNC)) { while (1) { diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index e4845ba..68cfd4c 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -1013,15 +1013,13 @@ qemuProcessHandleBlockJob(qemuMonitorPtr mon ATTRIBUTE_UNUSED, { virQEMUDriverPtr driver = opaque; virObjectEventPtr event = NULL; - const char *path; virDomainDiskDefPtr disk; virObjectLock(vm); disk = qemuProcessFindDomainDiskByAlias(vm, diskAlias); if (disk) { - path = virDomainDiskGetSource(disk); - event = virDomainEventBlockJobNewFromObj(vm, path, type, status); + event = virDomainEventBlockJobNewFromObj(vm, disk->dst, type, status); /* XXX If we completed a block pull or commit, then recompute * the cached backing chain to match. Better would be storing * the chain ourselves rather than reprobing, but this diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c index 85fe597..8a83a41 100644 --- a/src/remote/remote_driver.c +++ b/src/remote/remote_driver.c @@ -5023,7 +5023,7 @@ remoteDomainBuildEventBlockJobHelper(virConnectPtr conn, if (!dom) return; - event = virDomainEventBlockJobNewFromDom(dom, msg->path, msg->type, + event = virDomainEventBlockJobNewFromDom(dom, msg->disk, msg->type, msg->status); virDomainFree(dom); diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x index 1f9d583..e9a23cf 100644 --- a/src/remote/remote_protocol.x +++ b/src/remote/remote_protocol.x @@ -2352,7 +2352,7 @@ struct remote_domain_event_callback_graphics_msg { struct remote_domain_event_block_job_msg { remote_nonnull_domain dom; - remote_nonnull_string path; + remote_nonnull_string disk; int type; int status; }; diff --git a/src/remote_protocol-structs b/src/remote_protocol-structs index 5b22049..9904f3d 100644 --- a/src/remote_protocol-structs +++ b/src/remote_protocol-structs @@ -1797,7 +1797,7 @@ struct remote_domain_event_callback_graphics_msg { }; struct remote_domain_event_block_job_msg { remote_nonnull_domain dom; - remote_nonnull_string path; + remote_nonnull_string disk; int type; int status; }; -- 1.9.3

4 5

[libvirt] [PATCH] blockjob: avoid compiler uncertainty in info sizing
by Eric Blake 17 Jun '14

17 Jun '14

We have a policy of avoiding enum types in structs in our public API, because it is possible for a client to choose compiler options that can change the in-memory ABI of that struct based on whether the enum value occupies an int or a minimal size. But we missed this for virDomainBlockJobInfo. We got lucky on little-endian machines - if the enum fits minimal size (a char), we still end up padding to the next long before the next field; but on big-endian, a client interpreting the enum as a char would always see 0 when the server supplies contents as an int. While at it, I noticed that the web page lacked documentation: http://libvirt.org/html/libvirt-libvirt.html#virDomainBlockJobType not only for the recently added active commit, but also for all the other job types. * include/libvirt/libvirt.h.in (virDomainBlockJobInfo): Enforce particular sizing. (virDomainBlockJobType): Document recent addition. Signed-off-by: Eric Blake <eblake(a)redhat.com> --- include/libvirt/libvirt.h.in | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-) diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in index 127de11..dc88c40 100644 --- a/include/libvirt/libvirt.h.in +++ b/include/libvirt/libvirt.h.in @@ -2501,19 +2501,26 @@ int virDomainUpdateDeviceFlags(virDomainPtr domain, /** * virDomainBlockJobType: * - * VIR_DOMAIN_BLOCK_JOB_TYPE_PULL: Block Pull (virDomainBlockPull, or - * virDomainBlockRebase without flags), job ends on completion - * VIR_DOMAIN_BLOCK_JOB_TYPE_COPY: Block Copy (virDomainBlockRebase with - * flags), job exists as long as mirroring is active - * VIR_DOMAIN_BLOCK_JOB_TYPE_COMMIT: Block Commit (virDomainBlockCommit), - * job ends on completion + * Describes various possible block jobs. */ typedef enum { - VIR_DOMAIN_BLOCK_JOB_TYPE_UNKNOWN = 0, + VIR_DOMAIN_BLOCK_JOB_TYPE_UNKNOWN = 0, /* Placeholder */ + VIR_DOMAIN_BLOCK_JOB_TYPE_PULL = 1, + /* Block Pull (virDomainBlockPull, or virDomainBlockRebase without + * flags), job ends on completion */ + VIR_DOMAIN_BLOCK_JOB_TYPE_COPY = 2, + /* Block Copy (virDomainBlockRebase with flags), job exists as + * long as mirroring is active */ + VIR_DOMAIN_BLOCK_JOB_TYPE_COMMIT = 3, + /* Block Commit (virDomainBlockCommit without flags), job ends on + * completion */ + VIR_DOMAIN_BLOCK_JOB_TYPE_ACTIVE_COMMIT = 4, + /* Active Block Commit (virDomainBlockCommit with flags), job + * exists as long as sync is active */ #ifdef VIR_ENUM_SENTINELS VIR_DOMAIN_BLOCK_JOB_TYPE_LAST @@ -2537,7 +2544,7 @@ typedef unsigned long long virDomainBlockJobCursor; typedef struct _virDomainBlockJobInfo virDomainBlockJobInfo; struct _virDomainBlockJobInfo { - virDomainBlockJobType type; + int type; /* virDomainBlockJobType */ unsigned long bandwidth; /* * The following fields provide an indication of block job progress. @cur -- 1.9.3

3 3

Re: [libvirt] [Qemu-devel] [PATCH v4 04/29] NUMA: convert -numa option to use OptsVisitor
by Eduardo Habkost 17 Jun '14

17 Jun '14

On Mon, Jun 09, 2014 at 06:25:09PM +0800, Hu Tao wrote: > From: Wanlong Gao <gaowanlong(a)cn.fujitsu.com> > > Signed-off-by: Wanlong Gao <gaowanlong(a)cn.fujitsu.com> > Signed-off-by: Igor Mammedov <imammedo(a)redhat.com> > Tested-by: Eduardo Habkost <ehabkost(a)redhat.com> > Reviewed-by: Eduardo Habkost <ehabkost(a)redhat.com> > Signed-off-by: Paolo Bonzini <pbonzini(a)redhat.com> > Signed-off-by: Hu Tao <hutao(a)cn.fujitsu.com> So, this is when the ability to use multiple "cpus" ranges on -numa is finally enabled, right? Is there some capability probing mechanism that can be used by management to detect the new feature? -- Eduardo

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[libvirt] [PATCH] Increase the size of REMOTE_MIGRATE_COOKIE_MAX to REMOTE_STRING_MAX
by Shivaprasad G Bhat 17 Jun '14

17 Jun '14

During guest migration, if the domain xml is bigger than 16384 which is easily possible for a guest with good number of disks, message encode fails for xdr_remote_domain_migrate_perform3_ret(). So, Increase the COOKIE_MAX to STRING_MAX value. Signed-off-by: Shivaprasad G Bhat <shivaprasadbhat(a)gmail.com> --- src/remote/remote_protocol.x | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x index 1f9d583..ab9b83d 100644 --- a/src/remote/remote_protocol.x +++ b/src/remote/remote_protocol.x @@ -86,7 +86,7 @@ const REMOTE_VCPUINFO_MAX = 16384; const REMOTE_CPUMAPS_MAX = 8388608; /* Upper limit on migrate cookie. */ -const REMOTE_MIGRATE_COOKIE_MAX = 16384; +const REMOTE_MIGRATE_COOKIE_MAX = 4194304; /* Upper limit on lists of networks. */ const REMOTE_NETWORK_LIST_MAX = 16384;

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[libvirt] [PATCH v2 00/10] active commit to backing file
by Eric Blake 17 Jun '14

17 Jun '14

This enables active commit (collapsing a temporary qcow2 wrapper file back into the permanent backing file), when the destination is a regular file or block device. Further plans for this work before 1.2.6 is released: figure out how to add a qemu capability probe (qemu 2.0 supports active commit but did a lousy job of advertising it, and I found a corner case bug in it that won't be fixed until 2.1), and integrate with Peter's work to allow active commit into a network backing file. Earlier posts related to this series: https://www.redhat.com/archives/libvir-list/2014-May/msg00564.html https://www.redhat.com/archives/libvir-list/2014-May/msg00723.html There are definitely some merge conflicts to still work out (both Peter and I are adding a new flag to virDomainBlockCommit, so it is touching some of the same code). I can rebase again on top of Peter's pending patches, if needed. I also think the switch from nested struct to pointer for a disk definition's source will make it easier for Benoit's desire to implement quorums. Eric Blake (10): conf: store snapshot source as pointer, for easier manipulation conf: consolidate disk def allocation conf: store disk source as pointer, for easier manipulation conf: store mirroring information in virStorageSource conf: alter disk mirror xml output blockcommit: document semantics of committing active layer virsh: expose new active commit controls blockcommit: update error messages related to block jobs blockcommit: track job type in xml blockcommit: turn on active commit docs/formatdomain.html.in | 25 +- docs/schemas/domaincommon.rng | 35 +- include/libvirt/libvirt.h.in | 12 +- src/conf/domain_conf.c | 275 ++++++++----- src/conf/domain_conf.h | 7 +- src/conf/snapshot_conf.c | 56 +-- src/conf/snapshot_conf.h | 2 +- src/libvirt.c | 55 ++- src/libvirt_private.syms | 1 + src/lxc/lxc_controller.c | 8 +- src/lxc/lxc_driver.c | 8 +- src/parallels/parallels_driver.c | 2 +- src/qemu/qemu_command.c | 290 ++++++------- src/qemu/qemu_conf.c | 88 ++-- src/qemu/qemu_domain.c | 22 +- src/qemu/qemu_driver.c | 451 ++++++++++++--------- src/qemu/qemu_hotplug.c | 2 +- src/qemu/qemu_migration.c | 4 +- src/qemu/qemu_process.c | 39 +- src/security/security_selinux.c | 4 +- src/vbox/vbox_tmpl.c | 6 +- src/vmx/vmx.c | 2 +- src/xenxs/xen_sxpr.c | 8 +- src/xenxs/xen_xm.c | 4 +- .../qemuxml2argv-disk-active-commit.xml | 37 ++ .../qemuxml2argv-disk-mirror-old.xml | 47 +++ .../qemuxml2argvdata/qemuxml2argv-disk-mirror.xml | 9 +- .../qemuxml2xmlout-disk-mirror-old-inactive.xml | 41 ++ .../qemuxml2xmlout-disk-mirror-old.xml | 52 +++ tests/qemuxml2xmltest.c | 2 + tests/securityselinuxlabeltest.c | 6 +- tools/virsh-domain.c | 57 ++- tools/virsh.pod | 27 +- 33 files changed, 1072 insertions(+), 612 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-active-commit.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-mirror-old.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-mirror-old-inactive.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-mirror-old.xml -- 1.9.3

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[libvirt] [PATCH 0/4] catch bogus 'blockcommit --base=a --top=a'
by Eric Blake 17 Jun '14

17 Jun '14

This patch series was first hinted at here: https://www.redhat.com/archives/libvir-list/2014-June/msg00589.html It fixes a minor bug that has existed since blockcommit was first added, where we had an off-by-one that caused us to generate different error messages in some cases where a user was passing an impossible request to blockcommit (basically, we tried to filter bogus cases up front to give a nice message, but missed one case that resulted in reporting a different message from qemu instead). I apologize in advance for the conflicts this creates with Peter's pending series, but think that the testsuite is both more legible and more thorough with the changes added in this series. It's split into several patches to make review easier. And can I just add that it is annoying dealing with gcc's: virstoragetest.c:1076:1: error: the frame size of 6608 bytes is larger than 4096 bytes [-Werror=frame-larger-than=] (although I agree with the need for keeping that warning) Eric Blake (4): storage: add alias for less typing storage: renumber lookup tests storage: better tests of lookup blockcommit: require base below top src/qemu/qemu_driver.c | 3 +- src/util/virstoragefile.c | 33 +++++---- tests/virstoragetest.c | 184 ++++++++++++++++++++++++++++------------------ 3 files changed, 135 insertions(+), 85 deletions(-) -- 1.9.3

2 9

[libvirt] [PATCH] qemu: snapshot: Don't mark all block disks for metadata reuse
by Peter Krempa 17 Jun '14

17 Jun '14

For block devices used as snapshot source the new snapshot code would set the reuse flag. This inhibits to take snapshot without specially preparing the block image before taking the snapshot. Fortunately this is not a regression as only the new way of specifying snapshot source is affected. For the followin snapshot XML: <domainsnapshot> <disks> <disk name='vda' type='block'> <driver type='qcow2'/> <source dev="/dev/andariel/testsnap" /> </disk> </disks> </domainsnapshot> You'd get: error: internal error: unable to execute QEMU command 'transaction': Image is not in qcow2 format After this patch the snapshot is created successfully. --- src/qemu/qemu_driver.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 7bf2020..7ac7aa2 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -12885,13 +12885,11 @@ qemuDomainSnapshotCreateSingleDiskActive(virQEMUDriverPtr driver, switch ((virStorageType)snap->src->type) { case VIR_STORAGE_TYPE_BLOCK: - reuse = true; - /* fallthrough */ case VIR_STORAGE_TYPE_FILE: /* create the stub file and set selinux labels; manipulate disk in * place, in a way that can be reverted on failure. */ - if (!reuse) { + if (!reuse && snap->src->type != VIR_STORAGE_TYPE_BLOCK) { fd = qemuOpenFile(driver, vm, source, O_WRONLY | O_TRUNC | O_CREAT, &need_unlink, NULL); if (fd < 0) -- 1.9.3

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